| 摘要 |
<p>PURPOSE:To improve the adherence and solvent resistance of hardened film by a method wherein the silicone resin hardened case is produced by irradiating ultraviolet rays under specified conditions over ultraviolet-curing silicone resin, which is applied on at least one side of polyester film. CONSTITUTION:Coating liquid, the main component of which is ultraviolet-curing silicone resin, is applied onto at least one side of polyester film. Next, while the film is cooled below the temperature higher than the glass transition tempera ture (Tg) of polyester by 20 deg.C, ultraviolet rays are irradiated over said coated surface under the condition that the integral amount E(mJ/cm<2>) of ultraviolet rays having the wavelength of 330 - 390 nm satisfies the formula I, in which T is the thickness of the polyester film in mum, so as to produce silicone resin hardened case in order to obtain laminated polyester film. As the ultraviolet- curing silicone resin, oligomer or polymer having the siloxane structure with light-reactive group at the terminal is used.</p> |
